EP0429447A4 - Gasket assembly and electrical power transformer including the same - Google Patents
Gasket assembly and electrical power transformer including the sameInfo
- Publication number
- EP0429447A4 EP0429447A4 EP19890902849 EP89902849A EP0429447A4 EP 0429447 A4 EP0429447 A4 EP 0429447A4 EP 19890902849 EP19890902849 EP 19890902849 EP 89902849 A EP89902849 A EP 89902849A EP 0429447 A4 EP0429447 A4 EP 0429447A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- gasket
- slot
- base
- circular
- undercut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0466—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with a special seating surface
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49297—Seal or packing making
Definitions
- This invention relates generally to sealing gasket assemblies and more particularly to sealing gasket assemblies used in electrical power transformers.
- a pressure tight seal is needed 0 when the valve used in the device is closed or seated.
- the valve must react quickly to relieve the pressure in the transformer without destroying the seal mechanism or dislodging any gasket material which may be involved.
- This invention utilizes a five-sided gasket in an undercut slot, secured with epoxy to mechanically increas the retention of the gasket in the valve base of a power transformer.
- Fig. 1 is a partial cross section view of a power transformer using the invention.
- Fig. 2 is a detailed cross-sectional view of the gasket of the invention.
- the electrical power transformer 10 comprises a housing 12 having cooling fluid 14 and a transformer element 16.
- a circular relief valve nests in and is mounted on the circular housing opening 18.
- the pressure relief valve is made up of a tubular base 22 and includes a spring 24 which acts against the disc valve 26 to keep the valve normally closed.
- a slot 28 is formed in the tubular base 22 to re ⁇ ceive a gasket 32.
- the slot 28 includes an undercut portion 30.
- the resilient gasket 32 in the preferred embodiment, in cross section, is a five-sided gasket which may be seen, with reference to Fig. 2, to have a base portion 34 with first and second corners 36 and 38.
- the normally horizontal base portion 34 of gasket 32 normally rests in the slot 28 of tubular base 22.
- a substantially vertical longest side 40 extends from the first corner 36 of the base side to a position corresponding to the closed position of the movable disc valve member 26.
- the normally horizontal top side 42 of the gasket 32 normally abuts the valve member 26 when the valve is in the closed position.
- a tapered side 44 of the gasket 3 extends from the top side 42 to a position further from the substantially - 3 -
- a substantially vertical side 46 extends from the tapered side 44 to the second corner 38 of the base side 34.
- the epoxy and gasket are both securely retained so that even violent excursions of the valve or extreme pressure from the transformer housing will not destroy or dislodge the five-sided gasket from the tubular base 22.
- steps involved include forming a circular slot 28 in the base 22, the slot 28 including an undercut portion 30; inserting a five- sided resilient gasket 32 in the circular slot; and flowing epoxy 48 over a portion of the gasket 32 and into the undercut 30 and remaining slot 28 so that when epoxy hardens, the gasket 32 is retained securely in the slot 28.
- the invention thereby provides a method and apparatus for retaining a gasket in position during extreme operating conditions of an electrical power transformer valve.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
- Gasket Seals (AREA)
- Transformer Cooling (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/152,668 US4843187A (en) | 1988-02-05 | 1988-02-05 | Gasket assembly and electrical power transformer including the same |
US152668 | 2002-05-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0429447A1 EP0429447A1 (en) | 1991-06-05 |
EP0429447A4 true EP0429447A4 (en) | 1992-12-30 |
Family
ID=22543878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19890902849 Withdrawn EP0429447A4 (en) | 1988-02-05 | 1989-01-25 | Gasket assembly and electrical power transformer including the same |
Country Status (10)
Country | Link |
---|---|
US (1) | US4843187A (ko) |
EP (1) | EP0429447A4 (ko) |
JP (1) | JPH03503344A (ko) |
CA (1) | CA1288792C (ko) |
DK (1) | DK172090A (ko) |
ES (1) | ES2012979A6 (ko) |
GR (1) | GR1002636B (ko) |
MX (1) | MX166652B (ko) |
PT (1) | PT89626B (ko) |
WO (1) | WO1989007324A1 (ko) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2047441B1 (es) * | 1992-03-30 | 1996-10-16 | Electrotecnica Arteche Hermano | Transformador de tension electrica perfeccionado. |
US5762341A (en) * | 1997-01-13 | 1998-06-09 | Zygo Mould Limited | O-ring insert |
DE10065428A1 (de) * | 2000-01-12 | 2001-07-26 | Tiefenbach Bergbautechnik Gmbh | Sitzventil |
US6497248B2 (en) * | 2001-01-18 | 2002-12-24 | Qualitrol Corporation | Pressure relief device with one piece gasket |
ITPD20010014U1 (it) * | 2001-02-27 | 2002-08-27 | Comem Spa | Struttura di valvola di sicurezza particolarmente per trasformatori elettrici in bagno d'olio. |
DE10312177B3 (de) * | 2003-03-19 | 2004-06-17 | Maschinenfabrik Reinhausen Gmbh | Druckentlastungsventil |
DE502004006573D1 (de) * | 2003-03-19 | 2008-04-30 | Reinhausen Maschf Scheubeck | Druckentlastungsventil |
US7210497B2 (en) * | 2003-12-19 | 2007-05-01 | Qualitrol Corporation | Pressure relief device with increased flow rate |
US7111637B2 (en) * | 2003-12-19 | 2006-09-26 | Qualitrol Corporation | Enclosure system for pressure relief device |
US7887025B2 (en) * | 2007-12-06 | 2011-02-15 | Hartman Thomas A | Ball valve housing seat and method of securing the same to a ball valve |
US20110205742A1 (en) * | 2010-02-25 | 2011-08-25 | Mark Timmy Lee | Modular led lamps with integrated transformer |
HUE030146T2 (en) * | 2010-11-03 | 2017-04-28 | Leinemann Gmbh & Co Kg | switching valve |
TW201603071A (zh) * | 2014-02-25 | 2016-01-16 | 好根那公司 | 感應器 |
CN113707414B (zh) * | 2021-08-30 | 2024-07-12 | 天长市万福电子有限公司 | 具有防尘、防水效果的变压器 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2052474A1 (de) * | 1969-10-25 | 1971-05-06 | Crane Ltd | Dichtungsvornchtung |
EP0094702A1 (en) * | 1982-05-19 | 1983-11-23 | Qualitrol Corporation | Pressure relief device |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1601960A (en) * | 1922-03-10 | 1926-10-05 | Egbert H Gold | Hose coupling |
US1608424A (en) * | 1924-02-04 | 1926-11-23 | George E Putnam | Mud-pump valve |
US1751664A (en) * | 1928-11-20 | 1930-03-25 | Frederick E Smith | Valve seat |
US1948628A (en) * | 1929-11-25 | 1934-02-27 | Arthur J Penick | Valve mechanism |
US1811166A (en) * | 1930-04-14 | 1931-06-23 | Jenkins Bros | Check valve structure |
US2065870A (en) * | 1934-05-14 | 1936-12-29 | Parr Instr Company | Oxygen bomb |
US2451276A (en) * | 1944-04-27 | 1948-10-12 | Dill Mfg Co | Valve insides |
US2621011A (en) * | 1946-11-20 | 1952-12-09 | Maytag Co | High-pressure valve seal |
US3095619A (en) * | 1958-12-16 | 1963-07-02 | Edwin F Peterson | Method and means for sealing adjacent coacting closure surfaces of cavity contouringstructures |
US3217082A (en) * | 1962-10-08 | 1965-11-09 | Qualitrol Corp | Snap-action fault protector for electrical apparatus |
US3914528A (en) * | 1974-03-20 | 1975-10-21 | Qualitrol Corp | Pressure relief device for power transformer |
US4259984A (en) * | 1978-10-31 | 1981-04-07 | Dover Corporation | Valve construction |
JPS57173672A (en) * | 1981-04-21 | 1982-10-26 | Kubota Ltd | Fixing method of valve box side seat |
US4676266A (en) * | 1982-01-07 | 1987-06-30 | Qualitrol Corporation | Pressure relief device |
-
1988
- 1988-02-05 US US07/152,668 patent/US4843187A/en not_active Expired - Lifetime
-
1989
- 1989-01-25 EP EP19890902849 patent/EP0429447A4/en not_active Withdrawn
- 1989-01-25 WO PCT/US1989/000320 patent/WO1989007324A1/en not_active Application Discontinuation
- 1989-01-25 JP JP1502642A patent/JPH03503344A/ja active Granted
- 1989-02-03 GR GR890100063A patent/GR1002636B/el not_active IP Right Cessation
- 1989-02-03 MX MX0147160A patent/MX166652B/es unknown
- 1989-02-03 PT PT89626A patent/PT89626B/pt not_active IP Right Cessation
- 1989-02-03 CA CA000590072A patent/CA1288792C/en not_active Expired - Fee Related
- 1989-02-03 ES ES898900386A patent/ES2012979A6/es not_active Expired - Fee Related
-
1990
- 1990-07-17 DK DK172090A patent/DK172090A/da not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2052474A1 (de) * | 1969-10-25 | 1971-05-06 | Crane Ltd | Dichtungsvornchtung |
EP0094702A1 (en) * | 1982-05-19 | 1983-11-23 | Qualitrol Corporation | Pressure relief device |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 7, no. 20 (M-188)(1165) 26 January 1983 & JP-57 173 672 ( KUBOTA TEKKO K.K. ) 26 October 1982 * |
Also Published As
Publication number | Publication date |
---|---|
JPH03503344A (ja) | 1991-07-25 |
PT89626A (pt) | 1989-10-04 |
EP0429447A1 (en) | 1991-06-05 |
MX166652B (es) | 1993-01-26 |
ES2012979A6 (es) | 1990-04-16 |
DK172090D0 (da) | 1990-07-17 |
GR890100063A (el) | 1994-03-31 |
US4843187A (en) | 1989-06-27 |
DK172090A (da) | 1990-07-17 |
JPH0515287B2 (ko) | 1993-03-01 |
CA1288792C (en) | 1991-09-10 |
WO1989007324A1 (en) | 1989-08-10 |
PT89626B (pt) | 1994-02-28 |
GR1002636B (el) | 1997-03-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19900706 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 19921106 |
|
AK | Designated contracting states |
Kind code of ref document: A4 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
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17Q | First examination report despatched |
Effective date: 19930809 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19931220 |